Don't play computer for too long. I generally suggest that you play for three hours to look outside and go out for a walk. You have cervical pain now, which means that you usually sit all the time when playing computer, and you don't have a good posture when playing computer. I think you should find some games with more concentrated spirit, such as LOL, which is very harmful to your cervical spine.

Now that you have cervical pain, it's the same for you to control your computer time and play mobile phones every day. I can suggest the following points, which may help you if you try to do it:

1. Go out for a walk for three hours and see the outside world.

2. After playing a game, stop, watch a series and lie down comfortably. Although this is also a bad habit, it is better than sitting and playing games.

3. Listen to music, feel the music with your eyes closed, relax yourself and make your cervical vertebra comfortable.

4. I don't advise you to buy a soft chair by playing games. Don't concentrate too much. Although you can't do it yet, because I am a game fan, I feel it, but I have to restrain myself.

5. Let's play class. Let's play a game for two with your friends. A keyboard can be used by two people. You can use the joystick. At the very least, you don't have to put so much spirit in it. You can temporarily relax the mental stress brought by playing games, smile and compete for fun. For example, live games are best for you and your friends. If there is no small partner, you can skip this method.

I hope my answer will satisfy you!